Knowledge base for software setup, errors, and daily tool work.

Docker Compose Environment Variable Not Working: Fixes

You define a variable in a .env file or directly in docker-compose.yml, but your container sees n...

Fix Git Detached HEAD State in Visual Studio Code

You open your project in Visual Studio Code, check the Git graph or status bar, and see something...

Fix Node Sass Build Failure After npm Cache Clean

Cloudflare 522 Error: Server Response Time Troubleshooting

You're browsing a site and get a Cloudflare 522 error—'Connection timed out' or '...

Fix Discord Black Screen from Chrome Hardware Acceleration

Why Chrome Hardware Acceleration Causes Discord Black Screen

When Chrome uses hardware a...

Fix Nginx 'upstream connection refused' When Talking to PHP-FPM

You're seeing upstream connection refused in your Nginx error log, and your site...